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Subject: Re: finding permutation matrices using eig()
Date: Fri, 23 Apr 2010 12:48:05 +0000 (UTC)
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"Roger Stafford" <ellieandrogerxyzzy@mindspring.com.invalid> wrote in message <hqs3bg$3l0$1@fred.mathworks.com>...
> .........
>   Finally, if it happens that two or more singular values/eigenvalues are the same in each matrix, then you have a more difficult task facing you.  The needed permutation may match up eigenvectors by way of some rotation which you will have to somehow determine.
>  .........
------
  I would add the following to that last point:  In an extreme case with all eigenvalues equal, an eigenvector analysis tells you absolutely nothing.

Roger Stafford